Question 1

What is Rifaximin used for?

Accepted Answer

Rifaximin (brand name Xifaxan) is a GI Antibiotic indicated for IBS-D, Hepatic Encephalopathy, Traveler's Diarrhea.

Question 2

How does Rifaximin work?

Accepted Answer

Rifaximin works through the following mechanism: Non-systemic rifamycin antibiotic that acts locally in the GI tract, inhibiting bacterial RNA synthesis..

Question 3

What are the most common side effects of Rifaximin?

Accepted Answer

Reported side effects vary by individual. The side-effects section on this page lists the events most frequently reported to FDA FAERS for Rifaximin. FAERS is voluntary reporting, so it reflects what was reported, not absolute incidence.

Question 4

Is Rifaximin the same as Xifaxan?

Accepted Answer

Xifaxan is a brand name for Rifaximin. They share the same active ingredient and FDA-approved indications. Biosimilars and authorised generics may differ in inactive ingredients such as buffers or preservatives.

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